gitlab-org--gitlab-foss/app/controllers/concerns/wiki_actions.rb

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# frozen_string_literal: true
module WikiActions
include SendsBlob
include Gitlab::Utils::StrongMemoize
extend ActiveSupport::Concern
included do
before_action :authorize_read_wiki!
before_action :authorize_create_wiki!, only: [:edit, :create]
before_action :authorize_admin_wiki!, only: :destroy
before_action :wiki
before_action :page, only: [:show, :edit, :update, :history, :destroy]
before_action :load_sidebar, except: [:pages]
before_action only: [:show, :edit, :update] do
@valid_encoding = valid_encoding?
end
before_action only: [:edit, :update], unless: :valid_encoding? do
redirect_to wiki_page_path(wiki, page)
end
end
def new
redirect_to wiki_page_path(wiki, SecureRandom.uuid, random_title: true)
end
# rubocop:disable Gitlab/ModuleWithInstanceVariables
def pages
@wiki_pages = Kaminari.paginate_array(
wiki.list_pages(sort: params[:sort], direction: params[:direction])
).page(params[:page])
@wiki_entries = WikiPage.group_by_directory(@wiki_pages)
render 'shared/wikis/pages'
end
# rubocop:enable Gitlab/ModuleWithInstanceVariables
# `#show` handles a number of scenarios:
#
# - If `id` matches a WikiPage, then show the wiki page.
# - If `id` is a file in the wiki repository, then send the file.
# - If we know the user wants to create a new page with the given `id`,
# then display a create form.
# - Otherwise show the empty wiki page and invite the user to create a page.
#
# rubocop:disable Gitlab/ModuleWithInstanceVariables
def show
if page
set_encoding_error unless valid_encoding?
# Assign vars expected by MarkupHelper
@ref = params[:version_id]
@path = page.path
render 'shared/wikis/show'
elsif file_blob
send_blob(wiki.repository, file_blob, allow_caching: container.public?)
elsif show_create_form?
# Assign a title to the WikiPage unless `id` is a randomly generated slug from #new
title = params[:id] unless params[:random_title].present?
@page = build_page(title: title)
render 'shared/wikis/edit'
else
render 'shared/wikis/empty'
end
end
# rubocop:enable Gitlab/ModuleWithInstanceVariables
def edit
render 'shared/wikis/edit'
end
# rubocop:disable Gitlab/ModuleWithInstanceVariables
def update
return render('empty') unless can?(current_user, :create_wiki, container)
@page = WikiPages::UpdateService.new(container: container, current_user: current_user, params: wiki_params).execute(page)
if page.valid?
redirect_to(
wiki_page_path(wiki, page),
notice: _('Wiki was successfully updated.')
)
else
render 'shared/wikis/edit'
end
rescue WikiPage::PageChangedError, WikiPage::PageRenameError, Gitlab::Git::Wiki::OperationError => e
@error = e
render 'shared/wikis/edit'
end
# rubocop:enable Gitlab/ModuleWithInstanceVariables
# rubocop:disable Gitlab/ModuleWithInstanceVariables
def create
@page = WikiPages::CreateService.new(container: container, current_user: current_user, params: wiki_params).execute
if page.persisted?
redirect_to(
wiki_page_path(wiki, page),
notice: _('Wiki was successfully updated.')
)
else
render 'shared/wikis/edit'
end
rescue Gitlab::Git::Wiki::OperationError => e
@page = build_page(wiki_params)
@error = e
render 'shared/wikis/edit'
end
# rubocop:enable Gitlab/ModuleWithInstanceVariables
# rubocop:disable Gitlab/ModuleWithInstanceVariables
def history
if page
@page_versions = Kaminari.paginate_array(page.versions(page: params[:page].to_i),
total_count: page.count_versions)
.page(params[:page])
render 'shared/wikis/history'
else
redirect_to(
wiki_path(wiki),
notice: _("Page not found")
)
end
end
# rubocop:enable Gitlab/ModuleWithInstanceVariables
# rubocop:disable Gitlab/ModuleWithInstanceVariables
def destroy
WikiPages::DestroyService.new(container: container, current_user: current_user).execute(page)
redirect_to wiki_path(wiki),
status: :found,
notice: _("Page was successfully deleted")
rescue Gitlab::Git::Wiki::OperationError => e
@error = e
render 'shared/wikis/edit'
end
# rubocop:enable Gitlab/ModuleWithInstanceVariables
private
def container
raise NotImplementedError
end
def show_create_form?
can?(current_user, :create_wiki, container) &&
page.nil? &&
# Always show the create form when the wiki has had at least one page created.
# Otherwise, we only show the form when the user has navigated from
# the 'empty wiki' page
(wiki.exists? || params[:view] == 'create')
end
def wiki
strong_memoize(:wiki) do
wiki = Wiki.for_container(container, current_user)
# Call #wiki to make sure the Wiki Repo is initialized
wiki.wiki
wiki
end
rescue Wiki::CouldNotCreateWikiError
flash[:notice] = _("Could not create Wiki Repository at this time. Please try again later.")
redirect_to container
false
end
def page
strong_memoize(:page) do
wiki.find_page(*page_params)
end
end
# rubocop:disable Gitlab/ModuleWithInstanceVariables
def load_sidebar
@sidebar_page = wiki.find_sidebar(params[:version_id])
unless @sidebar_page # Fallback to default sidebar
@sidebar_wiki_entries, @sidebar_limited = wiki.sidebar_entries
end
end
# rubocop:enable Gitlab/ModuleWithInstanceVariables
def wiki_params
params.require(:wiki).permit(:title, :content, :format, :message, :last_commit_sha)
end
def build_page(args = {})
WikiPage.new(wiki).tap do |page|
page.update_attributes(args) # rubocop:disable Rails/ActiveRecordAliases
end
end
def page_params
keys = [:id]
keys << :version_id if params[:action] == 'show'
params.values_at(*keys)
end
def valid_encoding?
page_encoding == Encoding::UTF_8
end
def page_encoding
strong_memoize(:page_encoding) { page&.content&.encoding }
end
def set_encoding_error
flash.now[:notice] = _("The content of this page is not encoded in UTF-8. Edits can only be made via the Git repository.")
end
def file_blob
strong_memoize(:file_blob) do
commit = wiki.repository.commit(wiki.default_branch)
next unless commit
wiki.repository.blob_at(commit.id, params[:id])
end
end
end